Tire



E. LINDERME Dec. 9, 1924.

TIRE

;NVEN TOR.

A TTORNE Y.

Patentecl Dec. 9, 1924.

UNITED STATES EMIL LI1\TDERME, O]? CLEVELAND HEIGH'IS, OHIO.

TIRE.

Applcation fi1ed February 18, 1924. Serial No. 693,623.

T0 aZZ whom it ma;y concern:

Be it known that I, EMIL LINDERME, a eitzen of the United States, residing at Cleveland I-Ieights, in the count-y of Cuyzv hoga and State of Ohio, have invented certan new and useful Improvements in Tires, of Which the following is a specification.

This inventon relates to mprovements in tres and has for an object to provide a struct-ure in whch the tread may be readily renewed When necessary.

Another object s to provide a tiro hzwng a removabletread 1nember so mounted as to entrely eliminate creepng as between the two me1nbers.

It is likewise an ob-jeet to provide a tiro having a removable tread, the two members havng their contactng surfaces formed of practcally pure or plain gu1n rubber whereby a tendency toward adhesion s created so as t-o prevent relative movement. The tiro und tread me1nber are provided with a novel nterlooking feature Wl1ch Wll fu1tl1er assist in retanng the trend upon the tre. Othe1' objects Will be in pzut obvous end in part pointed out herenafter.

In order that the nvention and its mode of operaton may be readily understo-od by persone sklled in the art, I have in the aocompanyng illustrative drawings, and in the detaled descrption bas-ed thereon set out one possble embodment of the same.

In tl1ese drawngs:

Fig. 1 is a transverse sectonal view of a t1e constructed in acoordance with my inventon.

Fig. 2 s a plan view of the tre wth tl1e tread me1nber removed.

Fig. 8 s a longitudinal seetonal view of the assembled the end tread me1nber t-aken substantially on the line 3-3 of Figure 1.

Fig. 4; s a transverse seotional vevv showing th-e parts spaced apart.

Having particular referenoe to the drawin'g thl'oughout whieh si1nilar ohamcters of reference designate si1nlar parts, this 1nproved tire may be stated as o-omprisng a shoe or casing C having che nsnal beadng to provide for attaclnnent to a wheel ri1n. The peripheral portion P, however, s preferably flattened, (tl1ough thickened as usual), and is channellecl, the channel 6 being under out to more effeotually r-etan e trend 1nember T in postion upon the tire. The bottom of the peripheral ohannel 6 is provided with a set of circumfenentally spaced integral lugs. 7, each consstng of a neck portion 8 tennnating in a substantially truncated oone-shaped head 9 which ineidentally forms an annular flange 10 whose functon Will be apparent. The entire surface 11 of the channel and the lugs s of praotoally pure or plain gu1n rubber, that is, tlie' fabre s spaeed a consderable dstanoe below the surace so thai; when a tread 1nember with a si1nilarly forn-ed fece is arranged in contact vvith sad surlace there Will be a tendency toward adhesion, with the result that creeping Will be avoded.

A tread 1ne1nber T s provided and may have any preferred design o' tread surface. The nner fece 11 s flattened end widened to snugly fit wthn the undereut ol1annel 6 and is OIDI-Sfl with truncated cone-- shaped recesses 12 each of whioh has un annular rib 01 lip 13, adapced es le obvious, to engage beneath tl1e annular flange 10 cm- I'ied by the head 9 in the tire channel 6. While tl1es-e heads are preferably arranged in staggered relaton about the periphery in -order to more satsfaotorily function, t s to be undelsbo0d that they may be otherwise clisposed. The recesses of course are simlarly arranged.

As s clearly ndoated in Figure 1, the abrc F in the tread 1nember s provided with a, set of openngs Whioh are 01 greater dameter than the reoesses. The tread member is made up of rubber wtl1 no fabrio other than the single layer, thereby givng it unusual yeldablity, end facltating che interlockng of the lugs end recesses, in addton te the previously stated functon of ereatng a strong tendeney tovvard adhesion es between the eontactng surf'aces of the tread end tire.

In arrangng 2L tread member upon a tiro, tl1e struoture being as just set forth, che ti1e is deflated and the tread me1nloer may be slipped into the ohannel, it being understood that there is a slght contmotion of the ti1e and expansion of the tread to pennt tl1s aotion. Upon assmning' ts postlon in the ol1annel, tlle lugs end recesses beng interlocked and the rubber surfaces beng snugly eontaetng, tl1e ti1e is infiated in the usual manner. The result is tlmt the shoe or oasing is expanded to tghtly fit tl1e trend 1nember. Creeping of be tread upon the sl1oe is impossible due to che interl-ookng lugs and recesses, the contactng plain or pure gum rubb-erfaces and the close or tight fit due to nflaton; Lateral shif'tng s enfc1pely elimnated through the foregong structure taken in conjunction with the unde1*ct formation Of the channel 6 as shown.

I/Vhile I have set forth certain specfic structure, it s understood. that certan minor changes may be resorted t zis WlI 2'Lll withn' the scope of the append ed clams.

I claim:

1. A tira comprsing a casing having a crcumferentizl channel in its perphery, a set of circumferentally spaced lugs arranged in the bottom of the channel, subscantally truncated cone-shaped he-ads on che lufgs, 2L tread nember recevable in che channel and havng recesses to rec-eive said heads, and annular ribs around the recesses to 0rn1 interlocking connection wth che hadsl 2. A tire comprisng a casing having a flat cifCunferentally channelled periphery, sad chzpnnl'be'ing 'und-ercut, a set of circumferentally spaoed Iugs arranged upon the bot tono of said channel and disposed in staggered relaton, substantally truncatecI c'n-shziped' h'eads 'Ormed upon the lugs, a tread member havi ng a nner face provided with recsses'fo' snugly re0ive the heads, nWardly 'drected' amulaf rib's a1- rangd abut'the recesses to eihgage ove: th e trnbzpted heads and inter-lock cslng' and trahImembeix In testimony whereof, I affix my sigmature- EMIL LINDERME. 

